Itchy skin is one of life’s annoyances, especially when it happens at the most inconvenient times. Other than bug bites or diseases triggering the urge to scratch, why do we experience the sensation of itchy skin? The TED-Ed video explains possible reasons for it and why it’s such a relief when we scratch. And if you ever felt like itchiness was contagious, check out this article here.
The average person experiences dozens of individual itches each day. We’ve all experienced the annoyance of an inconvenient itch — but have you ever pondered why we itch in the first place? Is there actually an evolutionary purpose to the itch, or is it simply there to annoy us? Emma Bryce digs deep into the skin to find out.